, need very good writers. and president clinton probably had one of the very best. ma his name is michael walidman, now he heads the brennan center for justice at nyu law school. i'm very pleased co-join the program today from los angeles. michael, thanks for being here. this is a wonderful day to talk to you as we count down to this debate this evening. here is my first question to you, sir, the president of the united states, be it president obama or anybody else, has been sitting in office for nearly four years, the most differential character ever. he's called mr. president by his friends. and then all of a sudden for 90 minutes in front of 50 to 60 million people he can be torn apart. do you have to prepare for all of a sudden that change of existence, that change of environment? >> you're exactly right, ashleigh. there are real challenges for any incumbent president. they have people play music when they walk into a room, it is not a normal existence and very rarely will people ever tell a president to his face that he's dead wrong. so, yes, the debate prep process for an incumbent